Steam-generator.



c. 0. WORTHINGTON.

STEAM GENERATOR. APPLICATION FILED JAN. 27, 1909.

Patented Jung 20, 1911.

IIIIII ora ion.

CHARLES C. WORTHINGTON, F DUNNFIELIDQNEW JERSEY.

STEAM-GENERATOR.

To all whom it may concern:

Be it known that I, CI-IARLEsC. WORTH- INGTON, a citizen of the'UnitedStates, residing at Dunnfield, in the county of /Varren and State .ofNew Jersey, have invented a certain new and useful Improvement. inSteam-Generators, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings.

My invention relates to that class of steam generators known as flash orsemi-fiash boilers in which the feed water passes to the boiler about asthe steam is withdrawn from it and is vaporized as it is brought incontact with those surfaces of the boiler which have. been heated to ahigh temperature.

The object of my invention is to provide an improved boiler of the flashor semi-flash type using fluid fuel which can be constructed andrepaired at a minimum cost; which shall be free from all tendency toprime or to pass any of the water contained in the boiler to the enginebefore it has been vaporized; which shall contaiir the maximum amount ofheatingsurface for the amount of space it occupies, and which shallbecapable of attaining as high an economic efficiency as any of its type.y

The invention consists in the novel design and construction of thegenerator as set forth and described in the following specification andparticularly pointed out in the claims.

In the drawings, Figure 1 shows a central vertical section of thegenerator. Fig. 2 shows a sectional view of the generator, taken on line2'2 of Fig.

In the present exemplifi tation of the invention. A'is a jacket orcasing constructed of sheet metal in cylindricalform and lined withasbestos A, or other non-conducting material.

B is the mixing tube of a'burncr or heater where the fuel is mixed withthe air.

C is the combustion chamber which is preferably tubular in constructionand is provided with a flanged or enlarged lower portion C.

D is a baffle plate or heat deflector at the top of the generatoradjacent the end of the combustion chamber (1.;

E is a continuous tube preferably formed in a series of coils in whichthe feed water is vaporized and superheated, and these coils surroundthe combustion chamber be- Specification of Letters Patent.

Application filed January 27, 1909. Serial No. 474,584.

yond the flanged or enlarged portion thereof and terminate remote fromthe other end of the chamber 0.

F is the inlet through which the feed water is admitted to the tube.

issues.

Patented June 20, 1911.

G is the outlet through which the steam, i

H is a support on which the bottom coil i of the tube E rests.

J is the frameworlron which-the generator with that part of the tubecontaining the, i dryest steam and farthest removed from that part ofthe tube into which the feed water enters and that the direction inwhich it passes shall be such that it shall successively be brought. incontact with the various sections of the continuous tube in the followmg order: First, the section containing the steam which can thus besuperheated to the greatest advantage: second, the section con; tamingthe water which has been heated to the point of vaporizing, andlastly,the-sec; 'tlOn conta ning the feed water as it com mences to flowthrough the boiler.

It has heretofore been the general practice with boilers of this type todirect the heat from the combustion chamber in such manner that ltshallbe at once brought in contact with the lower coil of the tube and thenpass in an upward direction around.

and between the other coils being succes, .1

sirely brought in contact. with the upper sections of the tube. in theorder of their posltlon and reaching the topmost coillast of all. Fromthence the'gases are conducted to the atmosphere through a casingon theoutside of the generator.

order that the gases passing upward in this manner through the tubeshall be 'made to meet first the coils containing the steam,

Heretofore, in

and last,'the coils containing the water, in u the manner best adaptedto utilize the heat 1 as described above, it has bcennecessar to'introduce between the. various sect-ions or COllS of the tubecompllcated bends, forming loops or traps, reaching fromeach section ofthe coils to the level of the topmost coil of the generator; thence backagain to the section below the one from which it started. This method oftrapping each section of the tube prevents to a certain degree the waterquently happens that from flowing by gravity and steam sections. But inpractice, it frethese traps or loops between the sections tail toovercome the tendency of the water to run through the tube by gravitywith the result that priming ensues and the engine is endangered. Thebends in the tube that are necessary to form these traps require amultiplicity of joints, liable toleak and difficult to repair. The bendsalso form obstructions to the tree circulation of the water and for thelodgments of burnt oil sediment or other foreign material. These traps,which must necessarily overlap and surround the coils, make the coilsdifficult of-access and expensive to renew. With the improvedconstruction shown in ency to prime is entirely overcome as thecontinuous tube E in which the steam is generated is coiled ranged thatthe water to be vaporized shall enter the tube at the lower end andflowing through the successive coils to the upper end in a directioncontrary to the force of gravity, shall be gradually heated andprogressivelyand gradually vaporized and superheated in-its passage. Thecombustion chamber C is of such size as to insure and free combustion ofimpinging against the baffle plate I) at the top of the generator, aredeflected and pass down on the outside of the combustion chamber andbetween the coils of the tube, following a general. direction opposed tothe flow of the liquid and steam through it. By providing the enlargedextremity C of the combustion chamber C, which enlargement projectsbelow the lowermost coil, the heat from the heater or burner B will beprevented from coming directly into contact with the lowermost coil, butwill be directed into the combustion chamber C'to be carriedtherethrough and be discharged therefrom against the uppermost coil.

the full admixture the gases which,

coil and at the point which is in contact with" the products ofcombustion, When at their highest temperature.

With an improved generator 7 g in this manner, thc'natural tendency ofthe water is to remain in the-lowest sections of my invention, thistendhorizontally and so 'ar-.

By this arrangement of the tube and location'of the combustionchamconstructcd long enough to contain i ng the chamber,

to the super-heating the tube, while. the steam will always collect inthe upper sections, where it is superheated to the best advantage andall tendency of the water to be forced in advance of the steam andcarried to the engine with the steam is avoided.

Another feature of the invention is that the coils are entirely separatefrom the shell which forms a part of the combustion cham her and alsofrom the shellv forming the outer casing. The tube can be fastened inany convenientmanner tothe support ll, While tllGiCOHlbllSllOIl chamberC may be supported in any suitable manner from the ,framework, such asby means of clips or brackets D. The outer-shell A may also be supportedby" the framework J and the burner or heater Ema-y he held in positioninany suitable' manner. 'By this arrangement, if an examination of thecoils is undeytaken, the outer shellA may be lifted off, t'ully exposingthe coils. sired to remove the coils,'the y can be lifted clear from theburner portion by merely unfastening them from the supports Handdisconnccting'the pipes "F and G. portant feature of accessibility isnot found in other boilers of this type. a

Another advantage to be derived from the design and construction ofthegenerator when made in accordance with the principles of this inventionis that, if the tube be made the required amount of heating surface, thebending process mav be continuous from each coil to the next coilfthussecuring the great advai'itage of having the, gnerator consist of butone unjointed sinfil tube.

It is to e understood that although the preferred ipianner ofconstruction and arrangementi'pf accomplishing the desired result h'avefbeen fully set forth, various changes may be made in the details of construction and arrangement of the several parts without departing fromthe spirit of the invention. a

What I claim as new is:

1. In a boiler of the character described, the combination with acombustion chamber, of a series of connected coils surrounding saidchamber and" having an inlet and an outlet separate therefrom, a casingSui If it is de- This imjacent onfeieiid of the chamber, saidchamber beiadapted to conduct the products of combps fion through the coils out ofengagemepttherewith and discharge the same into 'Ehecasin'g beyond'thecoils, to be deflected against the coils.

2. In a boiler, the'combination with an upright combustion chamber, of aplurality of superimposed connected coils surroundsaid coils having aninlet at the lower end and an outlet at'the upper end, said chamberprojecting beyond the coils, the lower extremity of the chamber beingenlarged, a burner adjacent the said enlarged end of the chamber, saidchamber scrring' to convey the products of combustion through the coilsout of engagement therewith and discharge the same at the top of thecoil, a hood inclosing the coils and upper extremity of the chamber, andmeans for deflecting the heat against the topmost coil and in adirection toward the lowermost coil.

3. In a vertical boiler, the combination with a continuous tube formedin a series of superimposed horizontal coils, of a casing entirelysurrounding the coils. a combustion chamber surrounded by the coils andthrough which the products of combustion pass in an upward direction,and a deflector within the casing: for directing the said productstl'n'ougl'i the coils in a downward direction after they have passedthrough the said chamber.

4. A steam generator comprising a combustion chamber, a series of coils,and a casing covering the coils, each of the elements beingentirelyindependent and detached from the remaining elements, said parts beingarranged with respect to each other that the products of combustion willbe directed against the coils from the chamber, the feed water and steampassing in sequence from one coil to another in an upward directioncontrary to the direction of tlow of the heatin medium against.theroils.

a. in a boiler, the combination of a plurality of superimposed connectedcoils, said coils having an inlet at the lower end of the series and anoutlet at the top of the series whereby the fluid will be fed in anupward direction through the coils, and means for supplying heat to thecoils from the outlet. toward the inlet end in a direction opposed tothe direction of flow of the iluid through the coils, said means servingto prevent the heat from contacting with the coils during its passagefrom the inlet toward the outlet end.

In tcstimony whereof I have signed my name to this specification, in thenrcsence ot' two subscribing witnesses, on this seventh day of January,A. D. 1909.

CHAS. C. WORTHTNGTONJ

